<template>
  <div style="height: 100%;" v-loading="pageLoading">
    <a-layout class="container">
      <a-layout-sider width="300" theme="light" class="select-area">
        <a-row>
          <a-checkable-tag
            v-model="tag.checked0"
            @change="toggleNodeShow0"
            class="tag"
            >工具</a-checkable-tag
          >
          <div align="center">
            <a-list :grid="{ gutter: 8, column: 1 }" v-if="tag.toolShow">
              <a-list-item>
                <a-button-group>
                  <a-button
                    v-for="(tool, index) in field.tools"
                    :key="index"
                    :icon="tool.icon"
                    :type="
                      currentTool.type == tool.type ? 'primary' : 'default'
                    "
                    @click="selectTool(tool.type)"
                  >
                  </a-button>
                </a-button-group>
              </a-list-item>
            </a-list>
          </div>
        </a-row>
        <a-row>
          <a-checkable-tag
            v-model="tag.checked1"
            @change="toggleNodeShow1"
            class="tag"
            >基础节点</a-checkable-tag
          >
          <div align="center">
            <a-list :grid="{ gutter: 8, column: 2 }" v-if="tag.commonNodeShow">
              <a-list-item
                v-for="(commonNode, index) in field.commonNodes"
                :key="index"
              >
                <div
                  class="node-item"
                  :type="commonNode.type"
                  belongto="commonNodes"
                >
                  {{ commonNode.nodeName }}
                </div>
              </a-list-item>
            </a-list>
          </div>
        </a-row>
        <a-row>
          <a-checkable-tag
            v-model="tag.checked2"
            @change="toggleNodeShow2"
            class="tag"
            >高级节点</a-checkable-tag
          >
          <div align="center">
            <a-list :grid="{ gutter: 8, column: 2 }" v-if="tag.highNodeShow">
              <a-list-item
                v-for="(highNode, index) in field.highNodes"
                :key="index"
              >
                <div
                  class="node-item"
                  :type="highNode.type"
                  belongto="highNodes"
                >
                  {{ highNode.nodeName }}
                </div>
              </a-list-item>
            </a-list>
          </div>
        </a-row>
        <a-row>
          <a-checkable-tag
            v-model="tag.checked3"
            @change="toggleNodeShow3"
            class="tag"
            >泳道节点</a-checkable-tag
          >
          <div align="center">
            <a-list :grid="{ gutter: 8, column: 2 }" v-if="tag.laneNodeShow">
              <a-list-item
                v-for="(laneNode, index) in field.laneNodes"
                :key="index"
              >
                <div
                  class="node-item"
                  :type="laneNode.type"
                  belongto="laneNodes"
                >
                  {{ laneNode.nodeName }}
                </div>
              </a-list-item>
            </a-list>
          </div>
        </a-row>
      </a-layout-sider>
      <a-layout>
        <a-layout-header class="header-option">
          <a-tooltip title="保存流程" placement="bottom">
            <a-button
              @click="saveFlow"
              class="header-option-button"
              size="small"
              icon="save"
            ></a-button>
          </a-tooltip>
          <a-tooltip title="发布流程" placement="bottom">
            <el-button
              @click="publishFlow"
              v-if="flowId"
              class="el-icon-s-promotion"
              type="text"
            ></el-button>
          </a-tooltip>
          <a-tooltip title="生成流程图片" placement="bottom">
            <a-button
              @click="exportFlowPicture"
              class="header-option-button"
              size="small"
              icon="picture"
            ></a-button>
          </a-tooltip>
          <a-popconfirm
            title="确认要重新绘制吗？"
            placement="bottom"
            okText="确认"
            cancelText="取消"
            @confirm="clear"
          >
            <a-tooltip title="重新绘制" placement="bottom">
              <a-button
                class="header-option-button"
                size="small"
                icon="delete"
              ></a-button>
            </a-tooltip>
          </a-popconfirm>
          <a-tooltip :title="flowData.config.showGridText" placement="bottom">
            <a-button
              @click="toggleShowGrid"
              class="header-option-button"
              size="small"
              :icon="flowData.config.showGridIcon"
            >
            </a-button>
          </a-tooltip>
          <a-tooltip title="设置" placement="bottom">
            <a-button
              @click="setting"
              class="header-option-button"
              size="small"
              icon="setting"
            ></a-button>
          </a-tooltip>
          <a-popconfirm
            title="请选择帮助项："
            placement="bottom"
            okType="default"
            okText="快捷键大全"
            cancelText="使用文档"
            @confirm="shortcutHelper"
            @cancel="usingDoc"
          >
            <a-icon slot="icon" type="question-circle-o" style="color: red" />
            <a-tooltip title="帮助" placement="bottom">
              <a-button
                class="header-option-button"
                size="small"
                icon="book"
              ></a-button>
            </a-tooltip>
          </a-popconfirm>
          <a-tooltip title="退出" placement="bottom">
            <a-button
              @click="exit"
              class="header-option-button"
              size="small"
              icon="logout"
            ></a-button>
          </a-tooltip>
        </a-layout-header>
        <a-layout-content class="content">
          <flow-area
            ref="flowArea"
            :browserType="browserType"
            :flowData="flowData"
            :select.sync="currentSelect"
            :selectGroup.sync="currentSelectGroup"
            :plumb="plumb"
            :currentTool="currentTool"
            @findNodeConfig="findNodeConfig"
            @selectTool="selectTool"
            @getShortcut="getShortcut"
            @saveFlow="saveFlow"
          >
          </flow-area>
          <vue-context-menu
            :contextMenuData="linkContextMenuData"
            @deleteLink="deleteLink"
          >
          </vue-context-menu>
        </a-layout-content>
        <a-layout-footer class="foot">
          <span>VDF {{ info.version }}, Powered by {{ info.author }}</span>
        </a-layout-footer>
      </a-layout>
      <a-layout-sider
        width="350"
        theme="light"
        class="attr-area"
        @mousedown.stop="loseShortcut"
      >
        <cm-scroll>
          <flow-attr
            :plumb="plumb"
            :flowData="flowData"
            :select.sync="currentSelect"
          ></flow-attr>
        </cm-scroll>
      </a-layout-sider>
    </a-layout>
    <a-modal
      :title="'流程设计图_' + flowData.attr.id + '.png'"
      centered
      width="90%"
      :closable="flowPicture.closable"
      :maskClosable="flowPicture.maskClosable"
      :visible="flowPicture.modalVisible"
      okText="下载到本地"
      cancelText="取消"
      @ok="downLoadFlowPicture"
      @cancel="cancelDownLoadFlowPicture"
    >
      <div align="center">
        <img :src="flowPicture.url" />
      </div>
    </a-modal>
    <setting-modal ref="settingModal"></setting-modal>
    <shortcut-modal ref="shortcutModal"></shortcut-modal>
    <test-modal ref="testModal" @loadFlow="loadFlow"></test-modal>
  </div>
</template>

<script>
import Vue from "vue";
import jsplumb from "jsplumb";
import {
  tools,
  commonNodes,
  highNodes,
  laneNodes
} from "./config/basic-node-config.js";
import { flowConfig } from "./config/args-config.js";

import $ from "jquery";
import "jquery-ui/ui/widgets/draggable";
import "jquery-ui/ui/widgets/droppable";
import "jquery-ui/ui/widgets/resizable";
import html2canvas from "html2canvas";
import canvg from "canvg";
import { ZFSN } from "./util/ZFSN.js";
import FlowArea from "./modules/FlowArea";
import FlowAttr from "./modules/FlowAttr";
import SettingModal from "./modules/SettingModal";
import ShortcutModal from "./modules/ShortcutModal";
import UsingDocModal from "./modules/UsingDocModal";
import TestModal from "./modules/TestModal";
import ElementUi from "element-ui";
import "element-ui/lib/theme-chalk/index.css";

Vue.use(ElementUi);
export default {
  name: "flowDesign",
  components: {
    jsplumb,
    flowConfig,
    html2canvas,
    canvg,
    FlowArea,
    FlowAttr,
    SettingModal,
    ShortcutModal,
    UsingDocModal,
    TestModal
  },
  created() {
    let flowId = this.$route.query.flowId;
    let operate = this.$route.query.operate;
    if (flowId) {
      this.flowId = flowId;
    }
    if (operate) {
      this.operate = operate;
    }
    console.log(flowId, operate);
  },
  mounted() {
    const that = this;
    that.dealCompatibility();
    that.initNodeSelectArea();
    that.initJsPlumb();
    that.listenShortcut();
    that.initFlow();
    that.listenPage();

    setTimeout(function() {
      ZFSN.consoleLog([
        "欢迎使用三智流程设计器!",
        "当前版本：" + that.info.version,
        "Powered by " + that.info.author
      ]);
      that.$notification.open({
        placement: "bottomRight",
        message: "欢迎使用三智流程设计器!",
        description: "当前版本：1.0.5"
      });
    }, 1000);
  },
  data() {
    return {
      // 加载loading
      pageLoading: false,
      flowId: "",
      operate: "create",
      info: {
        version: "1.0.5",
        author: "三智科技"
      },
      tag: {
        checked0: true,
        checked1: true,
        checked2: true,
        checked3: true,
        toolShow: true,
        commonNodeShow: true,
        highNodeShow: true,
        laneNodeShow: true
      },
      browserType: 3,
      plumb: {},
      field: {
        tools: tools,
        commonNodes: commonNodes,
        highNodes: highNodes,
        laneNodes: laneNodes
      },
      flowData: {
        nodeList: [],
        linkList: [],
        attr: {
          id: "",
          name: "新流程",
          shortName: "简称",
          icoName: "el-icon-document-add",
          icoColor: "#FF8700",
          icoBackgroundColor: "#FF8700",
          removeDuplicationType: "",
          launchUserAutoPass: false,
          status: flowConfig.flowStatus.CREATE
        },
        config: {
          showGrid: true,
          showGridText: "隐藏网格",
          showGridIcon: "eye"
        }
      },
      currentTool: {
        type: "drag",
        icon: "drag",
        name: "拖拽"
      },
      currentSelect: {},
      currentSelectGroup: [],
      activeShortcut: true,
      linkContextMenuData: flowConfig.contextMenu.link,
      flowPicture: {
        url: "",
        modalVisible: false,
        closable: false,
        maskClosable: false
      }
    };
  },
  methods: {
    toggleNodeShow0(flag) {
      if (!flag) {
        this.tag.toolShow = false;
      } else {
        this.tag.toolShow = true;
      }
    },
    toggleNodeShow1(flag) {
      if (!flag) {
        this.tag.commonNodeShow = false;
      } else {
        this.tag.commonNodeShow = true;
      }
    },
    toggleNodeShow2(flag) {
      if (!flag) {
        this.tag.highNodeShow = false;
      } else {
        this.tag.highNodeShow = true;
      }
    },
    toggleNodeShow3(flag) {
      if (!flag) {
        this.tag.laneNodeShow = false;
      } else {
        this.tag.laneNodeShow = true;
      }
    },
    getBrowserType() {
      let userAgent = navigator.userAgent;
      let isOpera = userAgent.indexOf("Opera") > -1;
      if (isOpera) {
        return 1;
      }
      if (userAgent.indexOf("Firefox") > -1) {
        return 2;
      }
      if (userAgent.indexOf("Chrome") > -1) {
        return 3;
      }
      if (userAgent.indexOf("Safari") > -1) {
        return 4;
      }
      if (
        userAgent.indexOf("compatible") > -1 &&
        userAgent.indexOf("MSIE") > -1 &&
        !isOpera
      ) {
        alert("IE浏览器支持性较差，推荐使用Firefox或Chrome");
        return 5;
      }
      if (userAgent.indexOf("Trident") > -1) {
        alert("Edge浏览器支持性较差，推荐使用Firefox或Chrome");
        return 6;
      }
    },
    dealCompatibility() {
      const that = this;

      that.browserType = that.getBrowserType();
      if (that.browserType == 2) {
        flowConfig.shortcut.scaleContainer = {
          code: 16,
          codeName: "SHIFT(chrome下为ALT)",
          shortcutName: "画布缩放"
        };
      }
    },
    initJsPlumb() {
      const that = this;

      that.plumb = jsPlumb.getInstance(flowConfig.jsPlumbInsConfig);

      that.plumb.bind("beforeDrop", function(info) {
        let sourceId = info.sourceId;
        let targetId = info.targetId;

        if (sourceId == targetId) return false;
        let filter = that.flowData.linkList.filter(
          link => link.sourceId == sourceId && link.targetId == targetId
        );
        if (filter.length > 0) {
          that.$message.error("同方向的两节点连线只能有一条！");
          return false;
        }
        return true;
      });

      that.plumb.bind("connection", function(conn, e) {
        console.log(conn, e);

        let connObj = conn.connection.canvas;
        let o = {},
          id,
          label;

        if (
          that.flowData.attr.status == flowConfig.flowStatus.CREATE ||
          that.flowData.attr.status == flowConfig.flowStatus.MODIFY
        ) {
          if (e === undefined) {
            return;
          }
          id = "link-" + ZFSN.getId();
          label = "";
        } else if (that.flowData.attr.status == flowConfig.flowStatus.LOADING) {
          console.log(that.flowData.linkList, "线集合");
          let l = that.flowData.linkList[that.flowData.linkList.length - 1];
          id = l.id;
          label = l.label;
        }
        console.log(id, "link-id");
        connObj.id = id;
        o.type = "link";
        o.id = id;
        o.sourceId = conn.sourceId;
        o.targetId = conn.targetId;
        o.label = label;
        o.cls = {
          id: id,
          linkType: flowConfig.jsPlumbInsConfig.Connector[0],
          linkColor: flowConfig.jsPlumbInsConfig.PaintStyle.stroke,
          linkThickness: flowConfig.jsPlumbInsConfig.PaintStyle.strokeWidth
        };
        $("#" + id).bind("contextmenu", function(e) {
          that.showLinkContextMenu(e);
          that.currentSelect = that.flowData.linkList.filter(
            l => l.id == id
          )[0];
        });
        console.log($("#" + id), "link-$id");
        $("#" + id).bind("click", function(e) {
          let event = window.event || e;
          event.stopPropagation();
          that.currentSelect = that.flowData.linkList.filter(
            l => l.id == id
          )[0];
          console.log(that.currentSelect, "click-link");
        });
        if (that.flowData.attr.status != flowConfig.flowStatus.LOADING)
          that.flowData.linkList.push(o);
      });

      that.plumb.importDefaults({
        ConnectionsDetachable: flowConfig.jsPlumbConfig.conn.isDetachable
      });

      ZFSN.consoleLog(["实例化JsPlumb成功..."]);
    },
    initNodeSelectArea() {
      $(document).ready(function() {
        $(".node-item").draggable({
          opacity: flowConfig.defaultStyle.dragOpacity,
          helper: "clone",
          cursorAt: {
            top: 16,
            left: 60
          },
          containment: "window",
          revert: "invalid"
        });
        ZFSN.consoleLog(["初始化节点选择列表成功..."]);
      });
    },
    listenShortcut() {
      const that = this;
      document.onkeydown = function(e) {
        let event = window.event || e;

        if (!that.activeShortcut) return;
        let key = event.keyCode;

        switch (key) {
          case flowConfig.shortcut.multiple.code:
            that.$refs.flowArea.rectangleMultiple.flag = true;
            break;
          case flowConfig.shortcut.dragContainer.code:
            that.$refs.flowArea.container.dragFlag = true;
            break;
          case flowConfig.shortcut.scaleContainer.code:
            that.$refs.flowArea.container.scaleFlag = true;
            break;
          case flowConfig.shortcut.dragTool.code:
            that.selectTool("drag");
            break;
          case flowConfig.shortcut.connTool.code:
            that.selectTool("connection");
            break;
          case flowConfig.shortcut.zoomInTool.code:
            that.selectTool("zoom-in");
            break;
          case flowConfig.shortcut.zoomOutTool.code:
            that.selectTool("zoom-out");
            break;
          case 37:
            that.moveNode("left");
            break;
          case 38:
            that.moveNode("up");
            break;
          case 39:
            that.moveNode("right");
            break;
          case 40:
            that.moveNode("down");
            break;
        }

        if (event.ctrlKey) {
          if (event.altKey) {
            switch (key) {
              case flowConfig.shortcut.settingModal.code:
                that.setting();
                break;
              case flowConfig.shortcut.testModal.code:
                that.openTest();
                break;
            }
          }
        }
      };
      document.onkeyup = function(e) {
        let event = window.event || e;

        let key = event.keyCode;
        if (key == flowConfig.shortcut.dragContainer.code) {
          that.$refs.flowArea.container.dragFlag = false;
        } else if (key == flowConfig.shortcut.scaleContainer.code) {
          event.preventDefault();
          that.$refs.flowArea.container.scaleFlag = false;
        } else if (key == flowConfig.shortcut.multiple.code) {
          that.$refs.flowArea.rectangleMultiple.flag = false;
        }
      };

      ZFSN.consoleLog(["初始化快捷键成功..."]);
    },
    listenPage() {
      window.onbeforeunload = function(e) {
        e = e || window.event;
        if (e) {
          e.returnValue = "关闭提示";
        }
        return "关闭提示";
      };
    },
    initFlow() {
      const that = this;
      if (that.operate == "create") {
        if (that.flowData.attr.status == flowConfig.flowStatus.CREATE) {
          that.flowData.attr.id = "flow-" + ZFSN.getId();
        } else {
          that.loadFlow();
        }
      } else {
        if (this.flowId) {
          this.pageLoading = true;
          this.API.getWorkflowInfoById({ id: this.flowId })
            .then(res => {
              console.log(res.data);
              that.loadFlow(res.data);
            })
            .finally(() => {
              this.pageLoading = false;
            });
        }
      }
      ZFSN.consoleLog(["初始化流程图成功..."]);
    },
    loadFlow(json) {
      const that = this;

      that.clear();
      let loadData = json;
      that.flowData.attr = loadData.attr;
      that.flowData.config = loadData.config;
      that.flowData.attr.status = flowConfig.flowStatus.LOADING;
      that.plumb.batch(function() {
        let nodeList = loadData.nodeList;
        nodeList.forEach(function(node, index) {
          that.flowData.nodeList.push(node);
        });
        let linkList = loadData.linkList;
        that.$nextTick(() => {
          linkList.forEach(function(link, index) {
            that.flowData.linkList.push(link);
            let conn = that.plumb.connect({
              source: link.sourceId,
              target: link.targetId,
              anchor: flowConfig.jsPlumbConfig.anchor.default,
              connector: [
                link.cls.linkType,
                {
                  gap: 5,
                  cornerRadius: 8,
                  alwaysRespectStubs: true
                }
              ],
              paintStyle: {
                stroke: link.cls.linkColor,
                strokeWidth: link.cls.linkThickness
              }
            });
            if (link.label != "") {
              conn.setLabel({
                label: link.label,
                cssClass: "linkLabel"
              });
            }
          });
          that.currentSelect = {};
          that.currentSelectGroup = [];

          that.flowData.attr.status = flowConfig.flowStatus.MODIFY;
        });
      }, true);
      let canvasSize = that.computeCanvasSize();
      that.$refs.flowArea.container.pos = {
        top: -canvasSize.minY + 100,
        left: -canvasSize.minX + 100
      };
    },
    findNodeConfig(belongto, type, callback) {
      let node = null;
      switch (belongto) {
        case "commonNodes":
          node = commonNodes.filter(n => n.type == type);
          break;
        case "highNodes":
          node = highNodes.filter(n => n.type == type);
          break;
        case "laneNodes":
          node = laneNodes.filter(n => n.type == type);
          break;
      }
      if (node && node.length >= 0) node = node[0];
      callback(node);
    },
    selectTool(type) {
      let tool = tools.filter(t => t.type == type);
      if (tool && tool.length >= 0) this.currentTool = tool[0];

      switch (type) {
        case "drag":
          this.changeToDrag();
          break;
        case "connection":
          this.changeToConnection();
          break;
        case "zoom-in":
          this.changeToZoomIn();
          break;
        case "zoom-out":
          this.changeToZoomOut();
          break;
      }
    },
    changeToDrag() {
      const that = this;

      that.flowData.nodeList.forEach(function(node, index) {
        let f = that.plumb.toggleDraggable(node.id);
        if (!f) {
          that.plumb.toggleDraggable(node.id);
        }
        if (node.type != "x-lane" && node.type != "y-lane") {
          that.plumb.unmakeSource(node.id);
          that.plumb.unmakeTarget(node.id);
        }
      });
    },
    changeToConnection() {
      const that = this;

      that.flowData.nodeList.forEach(function(node, index) {
        let f = that.plumb.toggleDraggable(node.id);
        if (f) {
          that.plumb.toggleDraggable(node.id);
        }
        if (node.type != "x-lane" && node.type != "y-lane") {
          that.plumb.makeSource(
            node.id,
            flowConfig.jsPlumbConfig.makeSourceConfig
          );
          that.plumb.makeTarget(
            node.id,
            flowConfig.jsPlumbConfig.makeTargetConfig
          );
        }
      });

      that.currentSelect = {};
      that.currentSelectGroup = [];
    },
    changeToZoomIn() {
      console.log("切换到放大工具");
    },
    changeToZoomOut() {
      console.log("切换到缩小工具");
    },
    checkFlow() {
      const that = this;
      let nodeList = that.flowData.nodeList;

      if (nodeList.length <= 0) {
        this.$message.error("流程图中无任何节点！");
        return false;
      }
      return true;
    },
    //验证方法
    validateFunction(value, msg) {
      if (!value) {
        this.$message.error(msg);
        return false;
      } else {
        return true;
      }
    },
    // 保存流程
    saveFlow() {
      const that = this;
      let validate = that.flowData.attr;
      let validateArray = [
        this.validateFunction(validate.name, "请输入流程名称!"),
        this.validateFunction(validate.icoName, "请输入图标!"),
        this.validateFunction(validate.icoColor, "请输入图标颜色!"),
        this.validateFunction(validate.titleFieldTable, "请选择关联数据库表!"),
        this.validateFunction(validate.titleField, "请选择标题字段名!"),
        this.validateFunction(validate.completeField, "请选择完成标识!"),
        this.validateFunction(validate.pkField, "请选择主键字段!")
      ];
      if (!validateArray.includes(false)) {
        let flowObj = Object.assign({}, that.flowData);
        if (!that.checkFlow()) return;
        flowObj.attr.status = flowConfig.flowStatus.SAVE;
        let d = JSON.stringify(flowObj);
        console.log(d);
        this.pageLoading = true;
        this.API.addOrUpdateWorkflow({ body: d })
          .then(res => {
            this.saveFlowImage(that.flowData.attr.id, 1);
          })
          .finally(() => {
            this.pageLoading = false;
          });
        return d;
      }
    },
    // 保存流程图
    saveFlowImage(flowId, operate) {
      const that = this;
      if (!that.checkFlow()) return;
      let $Container = that.$refs.flowArea.$el.children[0],
        svgElems = $($Container).find('svg[id^="link-"]'),
        removeArr = [];

      svgElems.each(function(index, svgElem) {
        let linkCanvas = document.createElement("canvas");
        let canvasId = "linkCanvas-" + ZFSN.getId();
        linkCanvas.id = canvasId;
        removeArr.push(canvasId);

        let svgContent = svgElem.outerHTML.trim();
        canvg(linkCanvas, svgContent);
        if (svgElem.style.position) {
          linkCanvas.style.position += svgElem.style.position;
          linkCanvas.style.left += svgElem.style.left;
          linkCanvas.style.top += svgElem.style.top;
        }
        $($Container).append(linkCanvas);
      });

      let canvasSize = that.computeCanvasSize();

      let pbd = flowConfig.defaultStyle.photoBlankDistance;
      let offsetPbd = ZFSN.div(pbd, 2);

      html2canvas($Container, {
        width: canvasSize.width + pbd,
        height: canvasSize.height + pbd,
        scrollX: -canvasSize.minX + offsetPbd,
        scrollY: -canvasSize.minY + offsetPbd,
        logging: false,
        onclone: function(args) {
          removeArr.forEach(function(id, index) {
            $("#" + id).remove();
          });
        }
      }).then(canvas => {
        let dataURL = canvas.toDataURL("image/png");
        that.flowPicture.url = dataURL;
        that.API.saveWorkflowImage({ id: flowId, base64: dataURL }).then(
          res => {
            if (operate === 1) {
              this.success("保存流程成功");
            } else {
              this.success("保存并发布成功");
            }

            that.flowData.attr.status = flowConfig.flowStatus.MODIFY;
            // that.operate ='update'
            // that.flowId = flowId
            // this.initFlow();
          }
        );
      });
    },
    // 保存并发布流程
    publishFlow() {
      if (this.flowId) {
        const that = this;
        let flowObj = Object.assign({}, that.flowData);
        if (!that.checkFlow()) return;
        flowObj.attr.status = flowConfig.flowStatus.SAVE;
        let d = JSON.stringify(flowObj);
        this.pageLoading = true;
        this.API.saveAndPublishWorkflow({ body: d })
          .then(res => {
            this.saveFlowImage(that.flowData.attr.id, 2);
          })
          .finally(() => {
            this.pageLoading = false;
          });
      }
    },
    exportFlowPicture() {
      const that = this;

      if (!that.checkFlow()) return;

      let $Container = that.$refs.flowArea.$el.children[0],
        svgElems = $($Container).find('svg[id^="link-"]'),
        removeArr = [];

      svgElems.each(function(index, svgElem) {
        let linkCanvas = document.createElement("canvas");
        let canvasId = "linkCanvas-" + ZFSN.getId();
        linkCanvas.id = canvasId;
        removeArr.push(canvasId);

        let svgContent = svgElem.outerHTML.trim();
        canvg(linkCanvas, svgContent);
        if (svgElem.style.position) {
          linkCanvas.style.position += svgElem.style.position;
          linkCanvas.style.left += svgElem.style.left;
          linkCanvas.style.top += svgElem.style.top;
        }
        $($Container).append(linkCanvas);
      });

      let canvasSize = that.computeCanvasSize();

      let pbd = flowConfig.defaultStyle.photoBlankDistance;
      let offsetPbd = ZFSN.div(pbd, 2);

      html2canvas($Container, {
        width: canvasSize.width + pbd,
        height: canvasSize.height + pbd,
        scrollX: -canvasSize.minX + offsetPbd,
        scrollY: -canvasSize.minY + offsetPbd,
        logging: false,
        onclone: function(args) {
          removeArr.forEach(function(id, index) {
            $("#" + id).remove();
          });
        }
      }).then(canvas => {
        let dataURL = canvas.toDataURL("image/png");
        that.flowPicture.url = dataURL;
        that.flowPicture.modalVisible = true;
      });
    },
    downLoadFlowPicture() {
      const that = this;
      let alink = document.createElement("a");
      let alinkId = "alink-" + ZFSN.getId();
      alink.id = alinkId;
      alink.href = that.flowPicture.url;
      alink.download = "流程设计图_" + that.flowData.attr.id + ".png";
      alink.click();
    },
    cancelDownLoadFlowPicture() {
      this.flowPicture.url = "";
      this.flowPicture.modalVisible = false;
    },
    computeCanvasSize() {
      const that = this;
      let nodeList = Object.assign([], that.flowData.nodeList),
        minX = nodeList[0].x,
        minY = nodeList[0].y,
        maxX = nodeList[0].x + nodeList[0].width,
        maxY = nodeList[0].y + nodeList[0].height;
      nodeList.forEach(function(node, index) {
        minX = Math.min(minX, node.x);
        minY = Math.min(minY, node.y);
        maxX = Math.max(maxX, node.x + node.width);
        maxY = Math.max(maxY, node.y + node.height);
      });
      let canvasWidth = maxX - minX;
      let canvasHeight = maxY - minY;
      return {
        width: canvasWidth,
        height: canvasHeight,
        minX: minX,
        minY: minY,
        maxX: maxX,
        maxY: maxY
      };
    },
    clear() {
      const that = this;
      that.flowData.nodeList.forEach(function(node, index) {
        that.plumb.remove(node.id);
      });
      that.currentSelect = {};
      that.currentSelectGroup = [];
      that.flowData.nodeList = [];
      that.flowData.linkList = [];
    },
    toggleShowGrid() {
      let flag = this.flowData.config.showGrid;
      if (flag) {
        this.flowData.config.showGrid = false;
        this.flowData.config.showGridText = "显示网格";
        this.flowData.config.showGridIcon = "eye-invisible";
      } else {
        this.flowData.config.showGrid = true;
        this.flowData.config.showGridText = "隐藏网格";
        this.flowData.config.showGridIcon = "eye";
      }
    },
    setting() {
      this.$refs.settingModal.open();
    },
    shortcutHelper() {
      this.$refs.shortcutModal.open();
    },
    usingDoc() {
      window.open(this.info.gitee);
    },
    exit() {
      alert("退出流程设计器...");
    },
    showLinkContextMenu(e) {
      let event = window.event || e;

      event.preventDefault();
      event.stopPropagation();
      $(".vue-contextmenuName-flow-menu").css("display", "none");
      $(".vue-contextmenuName-node-menu").css("display", "none");
      let x = event.clientX;
      let y = event.clientY;
      this.linkContextMenuData.axis = { x, y };
    },
    // 删除线
    deleteLink() {
      const that = this;
      let id = that.currentSelect.id;
      let sourceId = that.currentSelect.sourceId;
      let targetId = that.currentSelect.targetId;
      that.plumb.deleteConnection(
        that.plumb.getConnections({
          source: sourceId,
          target: targetId
        })[0]
      );
      let linkList = that.flowData.linkList;
      console.log(sourceId, targetId);
      linkList.splice(
        linkList.findIndex(link => link.id == id),
        1
      );
      that.currentSelect = {};
    },
    loseShortcut() {
      this.activeShortcut = false;
    },
    getShortcut() {
      this.activeShortcut = true;
    },
    openTest() {
      const that = this;

      let flowObj = Object.assign({}, that.flowData);
      that.$refs.testModal.flowData = flowObj;
      that.$refs.testModal.testVisible = true;
    },
    moveNode(type) {
      const that = this;

      let m = flowConfig.defaultStyle.movePx,
        isX = true;
      switch (type) {
        case "left":
          m = -m;
          break;
        case "up":
          m = -m;
          isX = false;
          break;
        case "right":
          break;
        case "down":
          isX = false;
      }

      if (that.currentSelectGroup.length > 0) {
        that.currentSelectGroup.forEach(function(node, index) {
          if (isX) {
            node.x += m;
          } else {
            node.y += m;
          }
        });
        that.plumb.repaintEverything();
      } else if (that.currentSelect.id) {
        if (isX) {
          that.currentSelect.x += m;
        } else {
          that.currentSelect.y += m;
        }
        that.plumb.repaintEverything();
      }
    }
  }
};
</script>

<style lang="scss" scoped>
@import "./style/flow-designer.scss";
</style>
